| Round Rock to Campo de Criptana | 5,137.61 mi (8,268.18 km) |
| Round Rock to Campos del Puerto | 5,424.20 mi (8,729.41 km) |
| Round Rock to Canals | 5,271.79 mi (8,484.12 km) |
| Round Rock to Candelaria | 4,777.52 mi (7,688.68 km) |
| Round Rock to Canet de Mar | 5,329.84 mi (8,577.55 km) |
| Round Rock to Cangas | 4,785.72 mi (7,701.87 km) |
| Round Rock to Cangas de Narcea | 4,865.27 mi (7,829.90 km) |
| Round Rock to Canovellas | 5,315.38 mi (8,554.29 km) |
| Round Rock to Canteras | 5,294.22 mi (8,520.23 km) |
| Round Rock to Cantillana | 5,062.24 mi (8,146.88 km) |
| Round Rock to Capdepera | 5,433.82 mi (8,744.89 km) |
| Round Rock to Carballo | 4,764.82 mi (7,668.24 km) |
| Round Rock to Carcagente | 5,272.92 mi (8,485.95 km) |
| Round Rock to Cardedeu | 5,318.11 mi (8,558.67 km) |
| Round Rock to Carlet | 5,266.10 mi (8,474.96 km) |
